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Influence of dielectric loading on PIFA antennas in close proximity to user's body

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4 Author(s)
Pelosi, M. ; Dept. of Electron. Syst., Aalborg Univ., Aalborg ; Franek, O. ; Knudsen, M.B. ; Pedersen, G.F.

The emerging trend for handset antenna design puts strong constraints on their volume occupation and user's proximity resilience. Several PIFA antenna configurations are investigated, studying the influence of substrate/superstrate dielectric loading on both absorption and mismatch loss at 900 MHz. By using high-permittivity materials and by leaving a small clearance area between the PIFA top plate and the back of the handset, both absorption and mismatch loss can be reduced at the expense of a narrower bandwidth.

Published in:

Electronics Letters  (Volume:45 ,  Issue: 5 )

Date of Publication:

February 26 2009

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